Hitachi, Ltd.

Hitachi Video and Information System, Inc.

Tsuyoshi Nakagawa

Shigeo Ohashi

Yoshihiro Kondo

Takashi Naganawa

Rintaro Minamitani

Koichi Kimura

Kenichi Saito

Hideki Kamimaki

Yuji Yoshitomi

Yasushi Neho

Kenichi Nagashima

Shinji Matsushita

Makoto Kitano

Hideaki Gemma

Yukihide Inagaki

Noriyuki Ashiwake

Masato Nakanishi

Hitoshi Kawaguchi

Masahito Suzuki

Tadakatsu Nakajima

Masaaki Eishima

Hitoshi Matsushima

Hajime Katou

Susumu Iwai

Naoyuki Sakamoto

Yuuji Yoshitomi

Tatsuhiko Matsuoka

Yukiko Iwama

Yoshito Ohmura

Katsuhiro Arakawa

Susumu Saito

Osamu Suzuki

Yasuhiko Sasaki

Hajime Yamagami

Kenji Yokoi

Masao Miyawaki

Yasunori Yamada

Masato Kurita

Shigenori Yamagata

Tomoyasu Itou

Akihiko Seki

Kanji Midorikawa

Kazunori Hashimoto

Shinji Shibuya

Kiyokazu Nishioka

Tadashi Kyoda

Taisuke Kashima

Tsuguji Tachiuchi

Takashi Maruyama

Akira Takahashi

Yukio Kuroiwa

Nobuo Tsuchiya

Koichi Isaji

Yoshiaki Tsuchihashi

Kazunari Yamada

Koushiro Adachi

Hideaki Genma

Kotaro Matsuo

Yoshiyuki Amano

Ryooichi Mizuno

Yoshiaki Maeda

A labor of disconnecting many cables is omitted even when carrying a file basestation with an external storage loaded together with a main body. An information processing unit comprises: a main body having a CPU, a keyboard and a display unit; a file basestation with an external storage, such as an FD&#x2022;D or a CD ROM&#x2022;D, loaded; and a portreplicator with many connectors loaded. Removal of the main body alone from the portreplicator can omit the labor of disconnecting many cables connected to the portreplicator.

Information processing unit and information processing related units

An electronic module which is detachably mounted on electronic equipment. The electronic module includes a board having a heat generator mounted on a surface thereof, and a cooling jacket which is integrally attached to the electronic module. The cooling jacket is thermally coupled to the heat generator and has a passage of a cooling fluid therewithin.

Electronic equipment

A liquid cooling system having a circulator for circulating a cooling liquid therethrough including an input portion for receiving the cooling liquid and a separate output portion for supplying the cooling liquid. A heat receiving jacket supplied with the cooling liquid from the circulator and positioned to received heat generated from a heat generation body, a heat radiation portion for radiating heat which is supplied by the cooling liquid passing through the heat receiving jacket, and a member for circulating the cooling liquid passing through the heat radiation portion into the circulation means so that the cooling liquid circulates within a closed flow passage. An accumulating portion is further formed within a portion of the closed flow passage for accumulating the cooling liquid therein.

Liquid cooling system and personal computer using thereof

A liquid cooling system which is utilizable in a personal computer includes a pump for supplying a cooling liquid; a heat receiving jacket supplied with the cooling liquid and positioned to receive heat generated from a heat generation body, a heat radiation pipe for radiating heat which is supplied by the cooling liquid passing through the heat receiving jacket, and a passage for circulating the cooling liquid passing through the heat radiation pipe into the pump. The heat radiation pipe is made of material having a corrosion resistance that is higher than that of the heat receiving jacket.

Liquid cooling system and personal computer using the same

A labor of disconnecting many cables is omitted even when carrying a file basestation with an external storage loaded together with a main body. An information processing unit comprises: a main body having a CPU, a keyboard and a display unit; a file basestation with an external storage, such as an FD&#x2022;D or a CD-ROM&#x2022;D, loaded; and a portreplicator with many connectors loaded. Removal of the main body alone from the portreplicator or removal of the main body and the file basestation can omit the labor of disconnecting many cables connected to the portreplicator.

An electronic apparatus includes a case mounting a semiconductor element within an inside thereof, a heat-receiving member thermally connected with the semiconductor element, a heat-radiation member disposed on an inner side surface of the casing, and a liquid driver for driving a liquid coolant between the heat-radiation member and the heat-receiving member. The apparatus further includes a tank accumulating the liquid coolant therein with at least a predetermined volume of the coolant to delimit a coolant surface within the tank, wherein the tank, the heat-radiation member and the heat-receiving member are connected with tubes, and a suction end portion of a suction pipe connected into the tank is located at a position which is always below the coolant surface irrespective of change of position of the tank.

Electronic apparatus

In an information processing apparatus such as a space-saving type personal computer having a liquid-cooling type cooling system, the presence of a cooling liquid, the presence of a frozen state of the cooling liquid and the temperature of the cooling liquid are detected. When a freeze of the cooling liquid is detected, a CPU is throttled down to defrost the cooling liquid, or the cooling liquid is heated to be prevented from being frozen. Alternatively, a warning of detection of a freeze may be displayed. Alternatively, activation of the system may be stopped or operation of the system may be interrupted. By such measures, system failure is prevented from being caused by leaking, shortage, freezing, etc. of the cooling liquid.

Method of controlling cooling system for a personal computer and personal computer

A liquid cooling system includes a pump for supplying a cooling liquid including water, a heat receiving jacket supplied with the cooling liquid and positioned to receive heat generated from a heat generation body, a heat radiation portion for radiating heat which is supplied by the cooling liquid passing through the heat receiving jacket, and a member for circulating the cooling liquid passing through the heat radiation portion into the pump. Different parts of the liquid cooling system are provided with different corrosion resistance against the cooling liquid.

A cooling device for an electronic apparatus, comprising: a heat generating element attached within a first housing; a heat receiving jacket, being connected with said heat generating element, and being attached within said first housing; a second housing being rotatably supported on said first housing; a first heat exchanger attached within said second housing, for exchanging heat between an outside; and a liquid driving means for supplying a cooling liquid to said heat receiving jacket, wherein a portion of a pipe for connecting between said heat receiving means, said first heat exchanger, and said liquid driving means is made of a flexible tube made of a resin, and further wherein, a second heat exchanger and an ion exchanger are provided in a part of said pipe, said second housing is received within said second housing, and said ion exchanger is received within said second housing.

Cooling device of electronic apparatus

In the structure of an electronic apparatus, in which cooling of an heat-generating element is conducted through circulation of a liquid, in particular, for providing a liquid-cooling structure of being high in reliability, while also considering safety and assembling property into the consideration, wherein a water-cooling jacket is thermally connected with a heat-generating element , while thermally connecting a heat-radiation pipe with a heat-radiation plate provided on a rear surface of a display , wherein a coolant liquid is circulated between the water-cooling jacket and the heat-radiation pipe , by means of a liquid driving device . The heat-radiation pipe is connected onto a whole area of the heat-radiation plate, like crawling thereupon. A tank is provided in an upper portion of the heat-radiation plate , and is connected with the heat-radiation pipe

Liquid circulation cooling system for electronic apparatus

A plurality of electronic apparatuses, each apparatus having a closed loop cooling system, are installed in a cabinet having another closed loop fluid cooling system. Each of the closed loop fluid cooling systems includes a heat receiver and a pump. A projection is mounted on the electronic apparatus and a switching valve is arranged on the cabinet to stop or start circulation of a cooling fluid.

A desk-top type computer with a built-in LCD includes a chassis, a planar display attached to the chassis, a mother board attached to the chassis, heat generating portions including a CPU mounted on the mother board, and a memory device electrically connected to the mother board. A heat receiving head is fixed to at least one of the heat generating portions including the CPU, and the head is connected a tube filled with a cooling liquid. The tube is arranged in a serpentine or zigzag shape in a clearance between the chassis and the planar display facing the chassis. The cooling medium liquid circulating in the tube serves as a heat transferring medium to absorb the heat at the heat generating portion, and radiate the heat through the tube disposed in the clearance between the LCD and the chassis.

Liquid cooling system for all-in-one computer

In a liquid-cooling system for a notebook personal computer having a body part including a CPU and a chip set respectively mounted on a mother board and an HDD, and a display part rotatably supported by the body part, a heat receiving head is fixed to at least one heat generation part including the CPU. A tube filled with cooling liquid is connected to the heat receiving head. The tube connected to the heat receiving head is disposed in series on at least one heat generation part including the chip set so as to collect the heat generated from each heat generation part. The tube is also laid in a meandering or zigzagging pattern between a liquid crystal panel and a housing of the display part. The heat generated from each heat generation part is absorbed at part of the tube by the cooling liquid that circulates in the tube and functions as a heat transfer medium. The absorbed heat is then radiated at another part of the tube. Consequently, the heat generated from the chip set including the CPU and other heat sources such as the HDD can be radiated together to the outside. Local temperature rising is prevented. An uniform temperature environment is attained on all the surfaces of the body part.

Liquid cooling system for notebook computer

In an electronic equipment or apparatus, having water-cooling structure able to circulate/supply a cooling liquid with stability, for dealing with an increase of heat-generation of a heat-generating element, accompanying with an increase of processing performances, a pipe, which is located at a side where the cooling water flows out from a tank building up the water-cooling system, is extended up to the position of a center of the tank and disposed therein. Also, two (2) pieces of plates are provided for dividing the vicinity of an inlet portion of a pipe, through which the cooling water flows out, within the tank, and further, when injecting the cooling water into the tank, an injection jig for the cooling water is used, which has a connector portion with the tank.

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Hadano, Japan

Tsuyoshi Nakagawa